A digitizing world in which more and more things are connected is rapidly becoming reality. This is a phenomenon that has been ongoing for the last decades. The Internet of Thing (IoT) hype, the â??Always onlineâ?? culture and internet everywhere has together with low price electronics accelerated this process. Industries are aware of this and want to profit from this upcoming (disruptive) industry. The IoT market currently is chaotic. The new technologies and initiatives are rushing to a dynamic market over the coming years. In this paper, an overview is provided of today's IoT connectivity and protocols.